脳の窒素代謝 第6編 電気衝撃施行時のマウス並にラツテ脳髄アンモニアについて

On determining the contents of ammonia in the brains of mice and rats at the time submitted to electro-convulsion shock with Conway's method of micro-diffusion analysis, the author obtained the following results. 1) The brain ammonia increases markedly in both mice and rats at the time submitted to electro-convulsion shocks. 2) Whereas when the electro-convulsion shock is given twice in succession, no increase in the brain ammonia can be observed. However, if the interval between the two shocks be made over three hours, the same increase as observed in section 1) can be detected. 3) When frequent electro-convulsion shocks are given for many days in succession, the content of the rat-brain ammonia decreases. and when the slices of such a brain are incubated in Krebs-bicarbonate Ringer solution, the Production of ammonia is weakened markedly.